Testing attachment for steam-heated drying-cylinders.



G. H. BARRUS; TESTING ATTACHMENT FOR STEAM HEATED DRYING CYLINDERS.APPLICATION FILED SEPT. 30. 1915.

Patented Dee. H, 1917/.

2 SHEETS-SHEET I.-

G. H. BARRUS.

TESTING ATTACHMENT FUR STEAM HEATED DRYING CYLINDERS.

7 APPLICATION FILED SEPT- 30, 1915 Patented Dec. 11,1917.

UNITED STATES enema H. 12m ns, or BROOKLINE, MASSACHUSETTS. assienon 'roINTERNATIONAL PATENT OFFICE.

PAPER COMPANY, A CORPORATION OF NEW YORK.

rnsrme Armour/rum 'ron STEAM-HEATED nnirme-c'rnmnens- To all whom it mayconcern:

Be it known that l[, GEORGE H. Barnes, a citizen of the United States,residing at Brookline, in the county of Norfolk and State ofMassachusetts, have invented certain new and useful Improvements inTesting Attachments for Steam-Heated Drying- Cylinders, of which thefollowing is a specification, reference being-had therein to theaccompanying drawing. f

In drying apparatus, designed-more particularly' for drying paper in themanufacture of the. same, hollow steam heated rotary cylinders areemployed, around which the paper web passes, the heating steam beingintroduced, usually under pressure, through hollow journals on thecylinders. Such cylinders are usually equipped-with means for thedischarge of the water of condensation collecting in the lower portionof the cylinder, since any considerable accumulation of the watertherein will greatly impair the heating effect of the steam. It

is desirable there ore that means be provided to enable the at endant toascertain if the water is being properly. discharged from the cylinder,or hascollected therein, and if so, to what extent. It has beenproposed, in order to meet these conditions, to apply a try-cock to thehead of the c linder near its outer edge, so "that by opening the cockand observing whether the issuing jet blows water or steam, and notingto what angular distance in the revolution of the cylinder the cockblows off water, if any, the amount of' water within the cylinder willbe revealed.

Such an expedientis applicable only to slow running machines, or tothose temporarily slowed down for thepurpose of applying the test,'butin any machine it is objection-' able for a number of reasons, mainlbecausethe escaping water striking the rame of the machine, splashesdown on the paper web 'nd felt andinter'feres with the'drying Myinvention aims "to'enablethe attendant to readily determine theconditions obtaining within the cylinder with respect to the dischargeof the water or the degree of ac-Q cumulation therein, without the"objections above mentioned, and without the necessity of reducing thespeed of operation, and the invention consists in combining. with therotary cylinder, a test pipe, having a portion withilltheipylinder'providedwith an inlet Specification 01 Letters Patent. Patented Dec,11, 1917, Application filed September so, 1915. semi No. 53,458.

opening, and having a portion extendingjet issuing through the ventopening whether steam or water, and the position of the. pipe, willreveal to the attendant the conditions within the cylinder. i

In carrying my invention into effect in its preferred form, I propose toutilize a known form of siphon drain pipe employed to effeet thedischarge of water from the cylinder, by so modifying its form. andinpunting that its functlon-as a be rendered inactive at will, andit maythen be operated to act as a test pipe. Such a drain pipe comprises alongitudinal portion extending outside the cylinder and provided with adischarge opening, and a lateral'portion within the cylinder providedwith an inlet opening, the pressure of steam on the surface of the waterof co densation fore-- ing the. same up into theElateral portion of thepipe and causing its ischarge therethrough. To utilize such form ofdrainpipe in carrying my invention into effect, I provide 'the pipe witha valve controlled vent opening, I arran e means for shutting off thenormal disc arge of the. water drain pipe may through the pipe, therebyrenderin its disfixedly relatively to the rotary cylinder when it isacting as a drain pipe, it may be turnedat will about the axis of itslon 'tudinal portion to raise and lower the in at opening in;

the pipe within the cylinder. As a result inlet opening within thecylinder, the attendant can note at what point in the movefment of thepipe, the-jet issuing from the I vent opening begins to blow steam, andcan thus determme'the height of the water level within the cylinder, andthe (1118111173 of water therein. The determination o the water levelmay befacilitated by applying- 'to the-longitudinal portion of the pipe,out- I side the cylinder,-an indicating arm extendof this constructionandarrangement of inner portion of the pipe within the cylining radiallyfrom the pipe in the same rela- -that the position of the arm relativeto the head of the cylinder at the moment that the vent opening blowssteam, will showaccurately the corresponding position of the lateralportion of the pipe within the cylinder, and consequently the waterlevel may be readily determined.

In the accompanying drawings:

Figure 1 is a central longitudinal section through a drying cylinderhaving my invention embodied therein.

Fig. 2 is a longitudinal section on an enlarged scale of the drain pipeand sustaining parts removed from the cylinder, said pipe constructed inaccordance with my invention.

Fig. 3 is an end elevation of the same.

Fig. 4 is a side elevation showing how the drainage pipe is mounted andoperated.

Fig. 5 is a horizontal sectional view on the line aa of Fig. 4.

Referring to the drawings:

1 represents one ofa series of rotary hollow drying cylinders employedin paper making machines for drying thedamp'paper web, and aroundwhich'cylinders the web is adapted to pass as the cylinders are rotated.The cylinders are heated internally by the introduction of steamtherein, in the present instance the cylinder being provided with ahollow journal projecting axiall from the head of the same and mountedin suitable bearings 3, the steam entering the cylinder through saidjournal. As shown in Fig. 1, the end of the journal abuts steam-tightagainst a casting or frame 4, which frame is formed with an internalchamber 5, to which a steam supply pipe 6 is connected. A collar 7extends through the hollow journal and is screwed at its outer end intoan opening in the frame, the interior of the collar communicating withthe chamber 5 so that the steam entering the pipe 6 will flow throughthe collar 7. and enter the cylinder. 8 represents a drain pipe. for thedischarge of such water of condensation as may collect in the lowerportion of the cylinder. This pipe is formed with a longitudinal portion8 extending centrally through the hollow journal 2 within the collar 7,through the chamber 5 in the frame' 4 and outwardly through a stuflingbox 9 at the end of the frame. The

der is bent laterally, and terminates at its end adjacent the innersurface of the cylinder, so that when the lateral end extends downwardlyvertically within the cylinder, the inlet opening in its end will be inposition to receive the water of condensation. Outward of the chamber 5,the frame 4 is provided with a chamber 10, through which thelongitudinal portion of the drain pipe passes, and within this chamberthe pipe is formed in its side with a discharge opening 11 through whichthe water of condensation from the cylinder is discharged and flows intoa discharge pipe 12 connected with the chamber 10 and provided with acut-ofl' valve 13 for the purpose presently to be described.

In the normal operation of the mechanism so far described, the pressureof the steam introduced by the steam supply pipe 6, acting on thesurface of the water of condensation within the cylinder, will force.the same up into the entrance end of the drain pipe, and the Waterflowing therethrough will issue through the discharge opening 11 andflow off through the discharge pipe 12, it being understood that thevalve 13 remains open in this operation.

In accordance with my invention, the longitudina'l portion 8 of thedrain pipe, is so mounted within the frame 4 and collar 7, that the pipemay be turned therein about its longitudinal axis, the result of whichwill be to raise and lower the inlet end of the laterally extendingportion within the cylinder, the stufiing box 9 before alluded to,preventing the escape around the pipe, of water from chamber 10. Theouter end of the longitudinal portion of the drain pipe beyond the frame4 is open, and constitutes in effect a vent opening, which in the normaloperation of the pipe as a drain pipe, is closed by a valve 14. Thepurpose of this vent opening is to indicate to the attendant thepresence or absence of accumulated water within the cylinder, andwhether or not the water is being properly discharged in the normaloperation of the machine. These objects are effected in the followingmanner: When the attendant desires to be apprised of the conditionsmentioned, he first closes the valve 13 in the discharge pipe 12, andthen opens valve 14 of the vent opening of the drain pipe, and turns thelongitudinal portion of the "pipe about'its axis, the effect of whichwill be to swing up the lateral end of the pipe within the cylinder andelevate the inlet opening If there is accumulated water within thecylinder, water will issue from the vent opening, and will continue toissue until, by the continued turning of the pipe, the inlet openingpasses above the water level, whereupon steam will imue through the ventopening. Therefore by noting the point in the movement of the pipe atwhich the water ceases to flow and steam begins to flow, the attendantwill be enabled to calculate the level of the water in the cylinder. a

In the normal operation of the apparatus. the drain pipe for drainingpurposes is held in fixed relation to the rotary cylinder, with itsinner lateral end extending vertically downward as shown in Fig. 1, sothat the inlet opening will be inthe lowest position to drain oil thewater to the lowest level, the

5, the handle is within the cylinder.

pipe being held in 'this position by releasable lecking means, sothat-the attendant, by vreleaslng these] locking means will be enabledat will, and whenever the test is to be Th made, to turn the pipe asdescribed. In order that the pipe may be thus held, and may beconveniently turned when desired, and. in order that means may beafforded for indicating readily andwith accuracy, the level of theaccumulated water, I fix to the exposed end of the longitudinalportionof the pipe, a handle 15 which projects radially therefrom, andwhich, by being applied theretoin the same angular relation as that ofthe lateral inner end of the pipe, will serve, in addition to anoperating handle, as an indicating means for showing .on theoutside,.the position of the end of the pipe particularly in Figs. 4'and releasably locked to the frame or casting 4, by means of ahorizontal As shownmore plunger 17 extending loosely through anopening'in the handle and through a guiding so that by withopening 18 inthe frame,

' drawing the plunger outwardly from its lbeen actuated to release thewhen the plunger guiding opening to disengage the same from the frame,the handlewill be free to be moved to turn the drain pipe, and so thatis seated Within its guidlng opening and engaged with the frame, thehandle will be locked, therelation of the parts being such that when thehandle is locked, the inner lateral end of the pipe will extendvertically downward Within the cylinder as shown in Fig. 1. The plungeris provided near its inner end with an annular groove 17*, and isreleasably locked within its guiding opemng in engagement with the frameto hold the handlelocked, by means of a horizontal'locking pin 19mounted to slide loosely in a horizontal opening in the frame 4, in suchrelation to the annular groove in the plunger, that when the latterisseated to its full extent in its guiding opening,-th e end of the pinwill-enter the annular groove, and will lock the plunger in.

place. The pin is acted on by a leaf spring 21 fixed at one end vto theframe 4:, andslotted at its opposite end to embrace the pin, the saidspring bearing on a shoulder 22 on the pin andacting to hold the pinyieldingly inward as shown in Fig. 5. The pin is provided with a knurledhead 22 for withdrawing it to disengage its inner end from. the plunger,and the plunger is providedon its end. with a knurled head 23 by 1 whichit may be withdrawn endwiseto release the handle after the locking pinhas plu'ngerJ In the operation of the drain pipe for making the testsmentioned, the valve of the disf charge, pipe 12 being closed, and thevent "tending portion within t e "valve 14 of the drain pipe opened, the

handle 15 is and is turned left, until the flow of water in eachpositionceases, and the escaping jet changes to steam.

ese -two points mark the angular posireleased as before described,

to the right, and then to the tions of the entrance end of the pipewithin the cylinder'when said entrance end is at the water level, andthereby the location of'thelevel of the wateris established, andconsequently the drain pipe, neither water no steam issues through thevent opening, it indicates a stoppage in the pipe, and inasmuch as thepipe extends'straight longitudinally from its lateral inner end, a ducedthrough thevent-opening and pushed through the pipe,

the pipe is permittedand facilitated by the construction of the valvell, which as shownin Fig. 4 is provided with a straightway'va'lvepassage 14:; valve is turned to straight continuation of thepassage through the pipe. As a result, the wire may be readilyenteredinto and pushed through the its depth. Ifin this oper tion of fine wiremay be introand the obstruction rexmoved, The introduction ofithe wireinto this passage, when-the open position, forming a.

valve and pipe without liability of being obv structed by the valve.

ln the foregoing description and accompanying drawings, I have set forthmy invention in the particular form and embodimentwhich l'prefer toadopt, and which in practice has been found to answer to a satisfactorydegree the ends to be attained. It will be manifest, however, to theskilled mechanic, that the invention is not limited to this form ofembodiment, and that various changes in the detailed construction-ofthe" same may be made without departing from the limits of my inventlonprovided the operation will be substantially as above 1nd1- cated.Further it will be understood that the invention is not limited to anyparticular so disposed 2. In combination with a rotary cylinder havingmeans for the introduction. 0 steam therein, a test pipe havin alaterally excylinder provided with an inlet opening, and having alongitudinal portion extending outside of the cylinder and provided witha vent openlld lllh

and a valve ing, so disposed that thejet issuin there from will beexposed to view, a va ve controlling the vent opening, and an indicatingmember fixed to the longitudinal portion of the pipe in the same angularrelation thereto as that of the laterally extending portion, saidlongitudinal portion of the pipe being rotatable about its axis to vary,the height of the inlet opening Within the cylinder.

3. In combination with a rotary cylinder having means for theintroduction of steam therein, a normally fixed pipe for the dischargeof the water of condensation therefrom, and means for rendering thedischarging function of" the pipe inactive at will, said pipe beingmovable from its nor- .mal position while its discharging function isinactive and being provided with a vent. opening so disposed that thefluid issuing therefromwill be exposed to view.

4:. In combination with a rotary cylinder provided with means for theintroduction of steam therein, anormally fixed drain pipe entering thecylinder and through which the water of. condensation is normallydischarged, said pipe being provided with a valve-controlled ventopening so disposed that the jet issuing therefrom will be exposed toview, and said pipe being movable at will from its normal position tocause the discharge through the vent opening.

5. In combination with a rotary cylinder I provided with means for theintroduction of steam therein, a normally fixed drain pipe entering thecylinder and through which the water of condensation is normallydischarged, said pipe being provided with a valve-controlled ventopening so disposed that the jet issuing therefrom will be exposed toview, and said pipe being movable t at will from its normal dischargingposition for test purposes.

6. In combination with a rotary cylinder having means for theintroduction of steam therein, a test ,pipe having a laterally extending portion within the cylinder provided with an inlet opening, andhaving a portion outside the cylinder provided With a vent opening sodisposed that the jet issuing therefrom. will be exposed to view, avalve controlling said vent opening,and a handle applied to the exposedportion of the pipe for turning the same to vary the height of the inletopening within the cylinder.

7. In combination with a rotary e linder having means for theintroduction 0 steam therein, a-test pipe having a laterally extendingportion within the cylinder provided with an inlet opening, and having aportion extending outside the cylinder provided with a vent opening sodisposed that the jet issuing therefrom will be exposed to view, a valvecontrolling said vent opening, a'handle on the exposed portion of thepipe for turning it to vary the height of the inlet opening within thecylinder, and releasable means for locking said handle to hold the pipenormally fixed relatively to the cylin- 8. In combination with a rotarycylinder having means for the introduction of steam therein, a normallyfixed drain pipe extending into the cylinder and having an inletopening, said pipe being movable at will to vary. the height of theinlet opening, and being provided with a normally closed vent openingfor test purposes so disposed that the fluid issuing therefrom will beexposed to view.

9. In combination with a rotary cylinder provided with means for theintroduction of steam therein, a drain pipe having a longitudinallyextending outer portion situated outside the cylinder and open at itsouter end, and having a laterally extending inner portion with aninlet'opening within the cylinder, and having in its longitudinalportion a lateral opening for the normal discharge of the water, a valveclosing the outer end of the pipe, means for shutting off the normaldischarge of the water through the discharge opening, and means forturning thepipe at will about the axis of its longitudinal portion tovary the height of the inlet opening.

In testimony whereof, I have afiixed my signature.

GEORGE H; BARRUS.

